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Test Code MAL24 Microalbumin, 24 Hour Urine (with creatinine)

Specimen Required

5 mL urine aliquot from a well-mixed 24-hour urine collection

Specimen Minimum Volume

2mL

Specimen Stability

Room temperature: 7 days Refrigerated: 7 days Frozen: 28 days

Rejection Due To

Acid preserved urine

Day(s) and Time(s) Performed

Daily 

Method Name

Turbidometric

Collection Container / Tube

Preferred: Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Other Acceptable Container:

Transport / Storage Conditions

Room Temperature 

Special Instructions

Specify 24-hour total volume on container and test requisition.
Note: Exercise within 24 hours, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.

Reference Values

Microalbumin, 24 hour urine <30 mg/24 h
Microalbumin, 24 hour urine <20 mcg/min
Creatinine, 24 hour urine  
<36 Months Not established
36 Months-8 Years 0.11-0.68 g/24 h
9-12 Years 0.17-1.41 g/24 h
13-17 Years 0.29-1.87 g/24 h
>17 Years 0.63-2.50 g/24 h

The ADA defines abnormalities in albumin excretion as follows: 
Category Result (mg/24 h) Result (mcg/min)
Normal <30 <20
Microalbuminuria 30-299 20-199
Clinical Albuminuria ≥300 ≥200
The ADA recommends that at least two of three specimens collected within a 3-6 month period be abnormal before considering a patient to be within a diagnostic category.

CPT Codes

82043,82570

Analytic Time

Next Day 

Message

Specify 24-hour total volume on container and test requisition.
Note: Exercise within 24 hours, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.